#!/bin/python3
# Importing the library
import psutil
import argparse
import time
import subprocess
import json
from pathlib import Path
from typing import Dict, List
import karanage

if __name__ == '__main__':
    # Load arguments:
    parser = argparse.ArgumentParser()
    parser.add_argument("-C", "--connection", type=str, default="/etc/karanage/connection.json", help="json configuration file")
    parser.add_argument("-t", "--topic", type=str, default="", help="Topic of the message")
    parser.add_argument("-s", "--since", type=str, default=None, help="Iso date since the value time must be")
    parser.add_argument("-S", "--since-id", type=str, default=None, help="Remote BDD id to start request")
    parser.add_argument("-l", "--limit", type=int, default=100, help="Limit the number of request")

    # This element are read from the connection file:
    parser.add_argument("-u", "--url", type=str, default="http://localhost:20080/karanage/api", help="Base URL of the web service")
    parser.add_argument("-g", "--group", type=str, default="home", help="Group the the message")
    parser.add_argument("-T", "--token", type=str, default="", help="Token to access to the server")
    
    args = parser.parse_args()

    if Path(args.connection).exists():
        f = open(args.connection, "r")
        connection = json.loads(f.read())
        f.close()
    else:
        connection = {}
    # manage the connection model
    if "url" not in connection:
        connection["url"] = args.url
    if "group" not in connection:
        connection["group"] = args.group
    if "token" not in connection:
        connection["token"] = args.token
    
    # create the rest interface of karanage
    restInterface = karanage.KaranageREST(
        connection["url"], 
        connection["group"],
        connection["token"])
    
    if args.topic == "":
        print("Missing TOPIC ...")
    else:
        data = restInterface.get_state_history_topic(args.topic, since=args.since, since_id=args.since_id, limit=args.limit)
        print(f"Ret = {json.dumps(data, indent=4)}")